C3123121111113313121111331333133313331333223313231333133313231323133313331211   >>    C312312111111331312111133133313331333133322331323133313331323132313331333121   <<    C3123121111113313121111331333133313331333223313231333133313231323133313331213   >>      C3123121111113313121111331333133313331333223313231333133313231323133313331212   >>